Thread: Could use some beginners tip here..

Hey! So i'm trying to learn some stuff with this code. The code is suppose to be a game wich u can play Blackjack in vs the computer. And also give u a decent GUI. Thing is, i've got the code approved to that point that i can compile the program. Altho when im about to run it i get this message:

Exception in thread "main" java.lang.NullPointerException
at java.awt.Container.addImpl(Container.java:1043)
at java.awt.Container.add(Container.java:363)
at Blackjack.<init>(Blackjack.java:141)
at Blackjack.main(Blackjack.java:58)

I Do understand that there is some problem at line 141 and 58. But i just can't figure out what it is..
Please help me solve this!

Here is the code:

import java.awt.BorderLayout;
import java.awt.Graphics;
import java.awt.GridLayout;
import java.awt.Image;
import java.awt.LayoutManager;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
 
import javax.imageio.ImageIO;
import javax.swing.Icon;
import javax.swing.ImageIcon;
import javax.swing.JFrame;
import javax.swing.JButton;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JTextField;
 
public class Blackjack extends JFrame implements ActionListener {
 
	JButton [] start;
	//JButton [] bet;
	JButton [] top;
	JButton [] bottom;
	JLabel [] stats;
	JLabel [] playCards;
	JTextField [] display;
	BorderLayout layout;
	JPanel gameField;
	JPanel startOption;
	JPanel topDisplay;
	JPanel sideButton;
	JPanel bottomButton;
	BufferedImage[] pCards;
	BufferedImage[] dCards;
	String [] getCards;
	String [] pCardImg;
	String [] dCardImg;
	int [] dface;
	int [] dvalue;
	int [] dsuit;
	int [] pface;
	int [] pvalue;
	int [] psuit;
	double betTotal;
	double winLoss;
	double cash;
	int total;
	int dtotal;
	int stay;
	int initial;
	int dinitial;
 
	public static void main (String[] args) {
		Blackjack Gui = new Blackjack();
 
		Gui.setDefaultCloseOperation(EXIT_ON_CLOSE);
 
	}
 
	public Blackjack(){
 
		//startvärden när spelet startar
		initial = 0;
		dinitial = 5;
		cash = 100.00;
		winLoss = 0.00;
		total = 0;
		dtotal = 0;
		stay = 0;
		pCardImg = new String [6];
		dCardImg = new String [6];
		dface = new int [6];
		dvalue = new int [6];
		dsuit = new int [6];
		getCards = new String [10];
		pface = new int [6];
		pvalue = new int [6];
		psuit = new int [6];
 
 
		betTotal = 0;
		startOption = new JPanel();
		topDisplay = new JPanel();
		sideButton = new JPanel();
		bottomButton = new JPanel();
		gameField = new JPanel();
 
		//de olika delarna i GUI
		startOption.setLayout(new GridLayout(1, 1));
		topDisplay.setLayout(new GridLayout(1, 1));
		sideButton.setLayout(new GridLayout(5, 1));
		bottomButton.setLayout(new GridLayout(1, 3));
		gameField.setLayout(new GridLayout(2, 5));
 
		//själva spelytan
		playCards = new JLabel[10];
		playCards[0] = new JLabel ("");
		playCards[1] = new JLabel ("");
		playCards[2] = new JLabel ("");
		playCards[3] = new JLabel ("");
		playCards[4] = new JLabel ("");
		playCards[5] = new JLabel ("");
		playCards[6] = new JLabel ("");
		playCards[7] = new JLabel ("");
		playCards[8] = new JLabel ("");
		playCards[9] = new JLabel ("");
 
		//starta spelet
		start = new JButton[1];
		start[0] = new JButton("START");
 
		//välkommen
		display = new JTextField[1];
		display [0] = new JTextField("Välkommen");
		display [0].setEditable(false);
 
		//spelar statistik
		stats = new JLabel[5];
		stats[0] = new JLabel("Totalt: 0", 10);
		stats[1] = new JLabel("Satsat: €0.00", 10);
		stats[0] = new JLabel("Kort Kvar: 52", 10);
		stats[0] = new JLabel("Pengar Kvar: €" + cash, 10);
		stats[0] = new JLabel("Total V/F: €" + winLoss, 10);
 
		//nedre knapparna
		bottom = new JButton[3];
		bottom[0] = new JButton("Ta Kort");
		bottom[1] = new JButton("Stanna");
		bottom[2] = new JButton("Dela");
 
		//layouten och lägger till komponenter
		layout = new BorderLayout(5, 5);
 
		startOption.add(start[0]);
		topDisplay.add(display[0]);
		for (int i = 0; i < 5; i++){
			sideButton.add(stats[i]);
		}
		for (int i = 0; i < 3; i++){
			bottomButton.add(bottom[i]);
		}
		for (int i = 0; i < 10; i++){
			gameField.add(playCards[i]);
		}
		add(gameField, BorderLayout.CENTER);
		add(startOption, BorderLayout.WEST);
		add(topDisplay, BorderLayout.NORTH);
		add(sideButton, BorderLayout.EAST);
		add(bottomButton, BorderLayout.SOUTH);
 
		//lyssnare
 
		start[0].addActionListener(this);
 
		for(int i = 0; i < 3; i++){
			bottom[i].addActionListener(this);
		}
 
		//inställningar för fönstret
		setTitle("Blackjack");
		setSize(800, 500);
		setVisible(true);
	}
 
	@Override
	public void actionPerformed(ActionEvent e) {
		Object[] check = {"Ja", "Nej"};
		Object[] bet = {"€5.00", "€10.00", "€15.00"};
		JButton c = (JButton)(e.getSource());
		if(c.getText().equals("Hit")){
			initial += 1;
			JOptionPane.showMessageDialog(this,"Dealern gav dig ett kort");
			dealCards(initial);
			stats[0].setText("Totalt: " + total);
			if(total > 21){
				JOptionPane.showMessageDialog(this, "Du blev tjock");
				total = 0;
				dtotal = 0;
				stats[0].setText("Totalt: " + total);
				betTotal = 0.00;
				stats[1].setText("Satsat: €" + betTotal);
				clearHand();
				gotoContinue();
			}
		}
		if(c.getText().equals("Stanna")){
			/*for (int i = 0; i > 6; i++){
				System.out.println{pface(i)};
				*/
				stay = 1;
				JOptionPane.showMessageDialog(this, "Du stannar");
				if (stay == 1){
					dealerDraws();
					delay(1000);
				}
				if (dtotal < 17 && stay == 1){
					dealerDraws();
					delay(1000);
				}
			}
			if(c.getText().equals("Dela")){
				int chk = JOptionPane.showOptionDialog(this,"Är du säker?", "Dubbel kolla", JOptionPane.YES_NO_OPTION,
				JOptionPane.QUESTION_MESSAGE,
				null,
				check,
				check[2]);
			}
			if(c.getText().equals("START")){
 
				int b = JOptionPane.showOptionDialog(this, "Satsa minsta belopp eller högre.", "Var vänlig satsa", JOptionPane.YES_NO_CANCEL_OPTION,
			JOptionPane.QUESTION_MESSAGE,
			null,
			bet,
			bet[2]);
 
 
				if (b == 0){
					betTotal += 5.00;
				}
				if (b == 1){
					betTotal += 10.00;
				}
				if (b == 2){
					betTotal += 15.00;
				}
				stats[1].setText("Satsat: €" + betTotal);
				betTotal -= betTotal;
			    stats[3].setText("Pengar Kvar: €" + total);
			    stay = -1;
			    int i = 0;
			    dealCards(i);
			    System.out.println("TEST");
			    stats[0].setText("Totalt: €€" + total);
		}
    }	
 
		public void dealCards(int j){
			String [] temp = new String [4];
			if (j == 0){
				Shuffle myDealer = new Shuffle ();
				myDealer.ShuffleCards();
				for (int i = 0; i < 4; i++){
					getCards[i] = myDealer.Dealer();
					temp[i] = getCards[i];
					System.out.println(getCards[i]);
				}
				printCards(temp, j);
			}
 
			if (j >= 1){
				Shuffle myDealer = new Shuffle();
				myDealer.ShuffleCards();
				for (int i = 0; i < 2; i++){
					getCards[i] = myDealer.Dealer();
					temp[i] = getCards[i];
					System.out.println(getCards[i]);
				}
				printCards(temp, j);
			}
		}
 
		public void printCards(String [] temp, int j){
			if (j == 0){
				String [] elements0 = temp[0].split(" ");
				String [] elements1 = temp[1].split(" ");
				String [] elements2 = temp[2].split(" ");
				String [] elements3 = temp[3].split(" ");
				//spelarens hand
				pface[0] = Integer.parseInt(elements0[0]);
				pface[1] = Integer.parseInt(elements1[0]);
				psuit[0] = Integer.parseInt(elements0[1]);
				psuit[1] = Integer.parseInt(elements0[1]);
				//dealerns hand
				dface[0] = Integer.parseInt(elements0[0]);
				dface[1] = Integer.parseInt(elements0[0]);
				dsuit[0] = Integer.parseInt(elements0[1]);
				dsuit[1] = Integer.parseInt(elements0[1]);
 
				for (int i = 0; i < 2; i++){
					if (dface[i] > 10){
						dvalue[i] = 10;
					}
					else{
						dvalue[i] = dface[i];
				    }
				    if(pface[i] > 10){
						pvalue[i] = 10;
					}
					else{
						pvalue[i] = pface[i];
					}
					//spelarens ess värde
					if(pface[i] == 1 && total <= 11){
						pvalue[i] += 10;
					}
					if(pface[0] == 1 && pface[1] == 1){
						total = 12;
					}
					//dealerns ess värde
					if(dface[i] == 1 && dtotal <= 11){
						dvalue[i] += 10;
					}
					if(dface[0] == 1 && dface[1] == 1){
						dtotal = 12;
					}
					System.out.println("Spelare: " + pface[i] +" " + psuit[i] + " " + pvalue[i]);
				    total += pvalue[i];
				    System.out.println(total);
				    System.out.println("Dealer: " + dface[i] + " " + dsuit[i] + " " + dvalue[i]);
				    dtotal += dvalue[i];
				    System.out.println(dtotal);
				    getPSuit();
				    getDSuit();
				}
				//Kollar efter Blackjack (en perfekt 21a)och gångrar din satsning med tre, vid eventuell vinst
				if (total == 21 && dtotal < 21){
					JOptionPane.showMessageDialog(this,"BLACKJACK!");
					cash += betTotal * 3;
					winLoss += betTotal = 3;
					stats[3].setText("Pengar kvar: €" + (cash));
					stats[4].setText("Total V/F: €" + winLoss);
					total = 0;
					dtotal = 0;
					stats[0].setText("Totalt: " + total);
					betTotal = 0;
					stats[1].setText("Total satsning: €" + betTotal);
					clearHand();
					gotoContinue();
				}
			}
			if (j == 1){
				String [] elements0 = temp [0].split(" ");
				pface[2] = Integer.parseInt(elements0[0]);
				psuit[2] = Integer.parseInt(elements0[1]);
 
				for (int i = 2; i < 3; i++){
					if (pface[i] > 10){
						pvalue[i] = 10;
					}
					else{
						pvalue[i] = pface[i];
					}
					//spelarens ess värde
					if (pface[i] == 1 && total <= 11){
						pvalue[i] += 10;
					}
					for ( int k = 0; k < 6; k++){
						if( pface[k] == 1 && total > 21) {
 
							pvalue[k] -= 10;
						}
					}
					System.out.println(pface[i] + " " + psuit[i] + " " + pvalue[i]);
					total += pvalue[i];
					System.out.println(total);
				}
				getPSuit();
			}
			if (j == 2) {
				String [] elements0 = temp[0].split(" ");
				pface[3] = Integer.parseInt(elements0[0]);
				psuit[3] = Integer.parseInt(elements0[1]);
 
				for (int i = 3; i < 4; i++){
					if(pface[i] > 1){
						pvalue[i] = 10;
					}
					else{
						pvalue[i] = pface[i];
					}
					//spelarens ess värde
					if (pface[i] == 1 && total <= 10){
						pvalue[i] += 10;
					}
					for ( int k = 0; k < 6; k++){
						if ( pface[k] == 1 && total > 21){
 
							pvalue[k] -= 10;
						}
					}
					System.out.println(pface[i] + " " + psuit[i] + " " + pvalue[i]);
					total += pvalue[i];
					System.out.println(total);
				}
				getPSuit();
			}
			if (j == 3) {
				String [] elements0 = temp[0].split(" ");
				pface[4] = Integer.parseInt(elements0[0]);
				psuit[4] = Integer.parseInt(elements0[1]);
 
				for (int i = 4; i < 5; i++){
					 if(pface[i] > 10){
						pvalue[i] = 10;
					}
					else{
						pvalue[i] = pface[i];
					}
					//spelarens ess värde
					if (pface[i] == 1 && total <= 10);{
						pvalue[i] += 1;
					}
					for ( int k = 0; k < 6; k++){
						if (pface[k] == 1 && total > 21){
 
							pvalue[k] -= 10;
						}
					}
					System.out.println(pface[i] + " " + psuit[i] + " " + pvalue[i]);
					total += pvalue[i];
					System.out.println(total);
				}
				getPSuit();
			}
			if (j == 4) {
				String [] elements0 = temp[0].split(" ");
				pface[5] = Integer.parseInt(elements0[0]);
				psuit[5] = Integer.parseInt(elements0[1]);
 
				for (int i = 5; i < 6; i++) {
					if(pface[i] > 10){
						pvalue[i] = 10;
					}
					else{
						pvalue[i] = pface[i];
					}
					//spelarens ess värde
					if (pface[i] == 1 && total <= 10){
						pvalue[i] += 10;
					}
					for ( int k = 0; k < 6; k++){
						if ( pface[k] == 1 && total > 21){
							pvalue[k] -= 10;
						}
					}
					System.out.println(pface[i] + " " + psuit[i] + " " + pvalue[i]);
					total += pvalue[i];
					System.out.println(total);
				}
				getPSuit();
			}
			if (j == 5){
				String [] elements0 = temp[0].split(" ");
				dface[2] = Integer.parseInt(elements0[0]);
				dsuit[2] = Integer.parseInt(elements0[1]);
 
				for (int i = 2; i < 3; i++){
					if (dface[i] > 1){
						dvalue[i] = 10;
					}
					else{
						dvalue[i] = dface[i];
					}
					//dealerns ess värde
					if (dface[i] == 1 && dtotal <= 10){
						dvalue[i] += 10;
					}
					for ( int k = 0; k < 6; k++){
						if ( dface[k] == 1 && dtotal > 21){
 
							dvalue[k] -= 10;
						}
					}
 
					System.out.println("Dealer: " + dface[i] + " " + dsuit[i] + " " + dvalue[i]);
					dtotal += dvalue[i];
					System.out.println(dtotal);
				}
				getPSuit();
			}
			if (j == 6){
				String [] elements3 = temp[0].split(" ");
				dface[3] = Integer.parseInt(elements3[0]);
				dsuit[3] = Integer.parseInt(elements3[1]);
 
				for (int i = 3; i < 4; i++){
					if (dface[i] > 10){
						dvalue[i] = 10;
					}
					else{
						dvalue[i] = dface[i];
					}
					// dealerns ess värde
					if (dface[i] == 1 && dtotal <= 10){
						dvalue[i] += 10;
					}
 
					if (dface[i] == 1 && dtotal <= 21){
						dvalue[i] -= 10;
				}
				System.out.println("Dealer: " + dface[i] + " " + dsuit[i] + " " + dvalue[i]);
				dtotal += dvalue [i];
				System.out.println(dtotal);
			}
			getPSuit();
		}
		if (j == 7) {
			String [] elements3 = temp[0].split(" ");
			dface[4] = Integer.parseInt(elements3[0]);
			dsuit[4] = Integer.parseInt(elements3[1]);
 
			for (int i = 4; i < 5; i++){
				if (dface[i] > 10){
					dvalue[i] = 10;
				}
				else{
					dvalue[i] = dface[i];
				}
				//dealerns ess värde
				if (dface[i] == 1 && dtotal <= 10){
					dvalue[i] += 10;
				}
 
				if (dface[i] == 1 && dtotal <= 21){
					dvalue[i] -= 10;
				}
				System.out.println("Dealer: " + dface[i] + " " + dsuit[i] + " " + dvalue[i]);
				dtotal += dvalue [i];
				System.out.println(dtotal);
			}
			getDSuit();
		}
		if (j == 8) {
			String [] elements3 = temp[0].split(" ");
			dface[5] = Integer.parseInt(elements3[0]);
			dsuit[5] = Integer.parseInt(elements3[1]);
 
			for (int i = 5; i < 6; i++){
				 if (dface[i] > 10){
					 dvalue[i] = 10;
				}
				else{
					dvalue[i] = dface[i];
				}
				//dealerns ess värde
				if (dface[i] == 1 && dtotal <= 10){
					dvalue[i] += 10;
				}
 
				if (dface[i] == 1 && dtotal <= 21){
					dvalue[i] -= 10;
				}
				System.out.println("Dealer: " + dface[i] + " " + dsuit[i] + " " + dvalue[i]);
				dtotal += dvalue [i];
				System.out.println(dtotal);
			}
			getDSuit();
		}
	}
 
	public void dealerDraws(){
 
		if (dtotal < 17 && stay == 1){
			dealCards(dinitial);
			dinitial += 1;
		}
		if (dtotal >= 17 && dtotal <= 21){
			delay(1000);
			JOptionPane.showMessageDialog(this, "Dealern stannar");
			checkHandWin();
		}
		if (dtotal > 21){
			JOptionPane.showMessageDialog(this,"Dealern blev tjock");
			checkHandWin();
		}
	}
 
	public void checkHandWin(){
 
		if (total > dtotal || dtotal > 21){
			JOptionPane.showMessageDialog(this,"Du Vann!");
			initial = 0;
			cash += betTotal * 2;
			winLoss += betTotal;
			stats[3].setText("Pengar Kvar: €" + (cash));
			stats[4].setText("Total V/F: €" + winLoss);
			total = 0;
			dtotal = 0;
			stats[0].setText("Totalt: €" + total);
			betTotal = 0;
			stats[1].setText("Total Satsning: €" + betTotal);
			clearHand();
			gotoContinue();
		}else{
			checkHandLost();
		}
 
	}
 
	public void checkHandLost(){
		if(dtotal > total){
			JOptionPane.showMessageDialog(this,"Du Förlorade!");
			initial = 0;
			dinitial = 5;
			winLoss -= betTotal;
			stats[3].setText("Pengar Kvar: €" + (cash));
			stats[4].setText("Total V/F: €" + winLoss);
			total = 0;
			dtotal = 0;
			stats[0].setText("Totalt: €" + total);
			betTotal = 0;
			stats[1].setText("Total Satsning: €" + betTotal);
			clearHand();
			gotoContinue();
		}else{
			checkHandTie();
		}
	}
 
	public void checkHandTie(){
		if (dtotal == total){
			JOptionPane.showMessageDialog(this, "Lika");
			initial = 0;
			dinitial = 5;
		    cash += betTotal;
			stats[3].setText("Pengar Kvar: €" + (cash));
			total = 0;
			dtotal = 0;
			stats[0].setText("Totalt: €" + total);
			betTotal = 0;
			stats[1].setText("Total Satsning: €" + betTotal);
			clearHand();
			gotoContinue();
		}
		else{
			initial = 0;
			dinitial = 5;
			total = 0;
			dtotal = 0;
			stats[0].setText("Totalt: €" + total);
			cash += betTotal * 2;
			stats[3].setText("Pengar Kvar: €" + (cash));
			betTotal = 0.00;
			stats[1].setText("Total Satsning: €" + betTotal);
			clearHand();
			gotoContinue();
		}
	}
 
	public void gotoContinue(){
		initial = 0;
		dinitial = 5;
		total = 0;
		dtotal = 0;
		stats[0].setText("Totalt: €" + total);
		betTotal = 0;
		stats[1].setText("Total Satsning: €" + betTotal);
		Object[] check = {"Ja", "Nej"};
		Object[] bet = {"€5.00", "€10.00", "€15.00"};
		int a = JOptionPane.showOptionDialog(this,"Vill du spela en ny hand?", "Fortsätta?", JOptionPane.YES_NO_OPTION,
				JOptionPane.QUESTION_MESSAGE,
				null,
				check,
				check[2]);
 
		if (a == 0){
 
			int b = JOptionPane.showOptionDialog(this, "Satsa minsta belopp eller högre.", "Var vänlig satsa", JOptionPane.YES_NO_CANCEL_OPTION,
			JOptionPane.QUESTION_MESSAGE,
			null,
			bet,
			bet[2]);
 
			if (b == 0){
				betTotal += 5.00;
			}
			if (b == 1){
				betTotal += 10.00;
			}
			if (b == 2){
				betTotal += 15.00;
			}
 
			stats[1].setText("Total Satsning: €" + betTotal);
			cash -= betTotal;
			stats[3].setText("Pengar Kvar: €" + (cash));
			stay = -1;
			int i = 0;
			dealCards(i);
			System.out.println("TEST");
			stats[0].setText("Totalt: €" + total);
		}
 
		if (a == 1) {
			if (cash > 50.00){
				double winnings = cash - 50.00;
				JOptionPane.showMessageDialog(this, "Du vann €" + winnings );
			}
			if (cash < 50.00) {
				double losses = 50.00 - cash;
				JOptionPane.showMessageDialog(this, "Du förlorade €" + losses );
			}
			clearHand();
			initial = 0;
			dinitial = 0;
			cash = 50.00;
			winLoss = 0.00;
			total = 0;
			dtotal = 0;
			stats[0].setText("Totalt: €" + total);
			betTotal = 0.00;
			stats[1].setText("Total Satsning: €" + betTotal);
			stats[3].setText("Pengar Kvar: €" + (cash));
			stats[4].setText("Total V/F: €" + winLoss);
		}
	}
 
	public void clearHand(){
		for (int i = 0; i < 6; i++){
			dface[i] = 0;
			pface[i] = 0;
			dvalue[i] = 0;
			pvalue[i] = 0;
			dsuit[i] = 0;
			psuit[i] = 0;
		}
	}
 
	public void getDSuit(){
		String [] suit = new String [5];
		for (int i = 0; i < 5; i++){
			if (dsuit[i] == 1){
				 suit[i] = "D";
			 }
			 if (dsuit[i] == 2){
				 suit[i] = "C";
			 }
			 if (dsuit[i] == 3){
				 suit[i] = "H";
			 }
			 if (dsuit[i] == 4){
				 suit[i] = "S";
			 }
			 dCardImg[i] = suit[i] + dface[i] + ".jpg";
		 }
		 dealerHand();
	 }
 
	 public void getPSuit(){
		 String [] suit = new String [5];
		 for (int i = 0; i < 5; i++){
		 	  if (dsuit[i] == 1){
		 		   suit[i] = "D";
		 	 }
		 	  if (dsuit[i] == 2){
		 		   suit[i] = "C";
		 	 }
		 	  if (dsuit[i] == 3){
		 		   suit[i] = "H";
		 	 }
		 	  if (dsuit[i] == 4){
		 		   suit[i] = "S";
		 	 }
			 pCardImg[i] = suit[i] + pface[i] + ".jpg";
		 }
		 playerHand();
	 }
 
	 public void playerHand(){
		 pCards = new BufferedImage[5];
		 for (int i = 0; i < 5; i++){
			 try {
				 pCards[i] = ImageIO.read(new File(pCardImg[i]));
				 playCards[i] = new JLabel(new ImageIcon(pCards[i]));
				 add (playCards[i]);
				 repaint();
			 } catch (IOException e) {
			 }
		 }
	 }
 
	 public void dealerHand(){
		 dCards = new BufferedImage[5];
		 for (int i = 0; i < 5; i++){
		 	 try {
		 	     dCards[i] = ImageIO.read(new File(dCardImg[i]));
		 		 playCards[i] = new JLabel(new ImageIcon(dCards[i]));
		 		 add (playCards[i]);
		 		 repaint();
			 } catch (IOException e) {
			 }
		 }
	 }
 
	 public void delay(long time){
		 try{
			 Thread.sleep(time);
		 }
		 catch(Exception e){
		 }
	 }
	 public void paint(Graphics g){
		 super.paint(g);
 
		 if (pCards[0] != null){
			 g.drawImage(pCards[0], 100,300, null);
		 }
		 if (pCards[1] != null){
			 g.drawImage(pCards[1], 150,325, null);
		 }
		 if (pCards[2] != null){
			 g.drawImage(pCards[2], 200,300, null);
		 }
		 if (pCards[3] != null){
			 g.drawImage(pCards[3], 250,325, null);
		 }
		 if (pCards[4] != null){
			 g.drawImage(pCards[4], 300,300, null);
		 }
 
		 if (dCards[0] != null){
			 g.drawImage(dCards[0], 500,55, null);
		 }
		 if (dCards[1] != null){
			 g.drawImage(dCards[1], 450,80, null);
		 }
		 if (dCards[2] != null){
			 g.drawImage(dCards[2], 400,55, null);
		 }
		 if (dCards[3] != null){
			 g.drawImage(dCards[3], 350,80, null);
		 }
		 if (dCards[4] != null){
			 g.drawImage(dCards[4], 300,55, null);
	     if (dCards[2] != null){
			 g.drawImage(dCards[2], 400,55, null);
		 }
		 if (dCards[3] != null){
			 g.drawImage(dCards[3], 350,80, null);
		 }
		 if (dCards[4] != null){
			 g.drawImage(dCards[4], 300,55, null);
		 }
	 }
 }
	}

And here is the shuffler:

import java.util.Random;
 
public class Shuffle {
	private String [] deck;
	private int currentCard;
	private int [] suit;
	private int [] face;
	private int value;
	private Random mixCards = new Random();
	private int deckSize = 52;
 
	public Shuffle() {
		face = new int[]{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13};
		suit = new int[]{1, 2, 3, 4};
 
		deck = new String[deckSize];
		currentCard = 0;
 
		for (int i = 0; i < deck.length; i++){
			deck[i] = new String (face[i % 13] + " " + suit[i / 13]);
		}
	}
 
	public void ShuffleCards(){
		currentCard = 0;
 
		for (int i = 0; i < deck.length; i++){
			int f = mixCards.nextInt(deckSize);
 
			String temp = deck[i];
			deck[i] = deck[f];
			deck[f] = temp;
		}
	}
 
	public String Dealer(){
		if (currentCard < deck.length){
 
			return deck[currentCard++];
 
		}
		return null;
	}
}

It's a pretty long code, but i thought it would be better to post it all, since i don't know exactly what u people might wan't see!

Thanks for the fast response. Yeah i tried to google a bit and that was the response i found everywhere. The problem i had for last hour is that i just can't track down what variable is null. Im just not that good of a programmer to find "broken" stuff. Any other tip u can give me? to point me more in the right direction

Ok, so on row 140 i should do:
System.out.println(????)
Because i don't know what the value of that variable is :S

It's not my code, i'm just trying to learn

--- Update ---

This is row 141 in my code:

sideButton.add(stats[i]);

So i don't know what the value is.

And how do i figure out what the values of those 3 is

I just don't get it to work. Damn this is frustrating..